3.1.2. Isoflavone content, FRAP, and in vitro protein digestibility
The isoflavone contents of soy flours are presented in Table 2.
Compared to raw soy flour, heat-treated soy flours have higher isoflavone
contents and are significantly different from each other
(p < 0.05). That is, total isoflavone content (genistein plus daidzein)
was the highest in SS (1843 lmol/g) flour, followed by RS
(1603 lmol/g), NS (1461 lmol/g), and GS (1129 lmol/g) flour. In
the case of GS flour, the daidzein content was higher but genistein
content was lower than in NS. Our results corroborate those of